Taking some time away from the team could also be an option. Lance can use this time to clear his head, think about what he really wants from the team, and then come back with a fresh perspective and a plan to address the situation.
He could try to communicate with his teammates. By openly expressing his feelings, he might be able to resolve the issues. For instance, he can say 'I felt really hurt when you did X'.
Lance might also choose to focus on self - improvement. He can train harder and show his teammates what he's capable of. This way, he can gain their respect and perhaps make them realize their wrongdoings.
It might be due to exclusion. If his teammates constantly leave him out of team activities or strategies, Lance would surely be hurt. For example, they plan important plays without including him, making him feel like he's not an important part of the team.
They could also create a peaceful and relaxing environment for him. Maybe they clean up his room, light some scented candles, and just sit with him in silence. This kind of quiet presence can be very comforting. They might also write him little notes of encouragement and leave them where he can find them easily.
By showing the helplessness of his teammates. If they don't know how to save Lance, it adds to the tension. They might be scrambling around, trying different things but nothing seems to work.
Jason might isolate himself at first. He's a tough character, so he may try to deal with the pain on his own without showing weakness.
One common theme is physical injury and recovery. For example, Lance might get seriously injured in a fight and then have to go through a long process of healing, which shows his strength and determination.
It might also be Neville. He has shown great courage and loyalty in the series, and he would surely step up to comfort Harry. Neville has a kind heart and would be sensitive to Harry's pain.
In some fanfictions, Team 7 might hurt Naruto through their words. For example, Sasuke could say something really mean about Naruto's lack of skills compared to his own in the beginning. Sakura might also be dismissive of Naruto's feelings for her in a hurtful way, which could make Naruto feel isolated within the team.
One popular 'lance hurt' fanfiction might be 'The Trials of Lance'. It delves into the emotional and physical pain Lance endures during a difficult mission. The story shows his struggle and how he overcomes it with the support of his friends.
He might isolate himself at first. Natsu could withdraw from his friends and normal activities, needing time alone to process his pain. This is a common way for people, or in this case, characters, to deal with heartbreak.
He might be shocked at first. It's not every day you find out you have mates. He could be a bit clumsy around them, not knowing how to act. Maybe he stutters when he tries to talk to them or gets all flustered.